/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.apache.paimon.utils;

import org.apache.paimon.predicate.Predicate;

/**
 * Represents a filter (boolean-valued function) of two argument. This class is for avoiding name
 * conflicting to {@link Predicate}.
 */
@FunctionalInterface
public interface BiFilter<T, U> {

    BiFilter<?, ?> ALWAYS_TRUE = (t, u) -> true;

    boolean test(T t, U u);

    @SuppressWarnings({"unchecked", "rawtypes"})
    static <T, U> BiFilter<T, U> alwaysTrue() {
        return (BiFilter) ALWAYS_TRUE;
    }
}
